The maximum operating temperature range for the BUX98APW is -40°C to 150°C.
To ensure proper biasing, connect the base of the transistor to a voltage divider network that provides a stable voltage reference, and ensure the collector-emitter voltage is within the recommended range.
Use a multi-layer PCB with a solid ground plane, and ensure good thermal conductivity by using thermal vias and a heat sink if necessary. Keep the transistor away from heat sources and ensure good airflow.
Use ESD protection devices such as TVS diodes or ESD suppressors, and follow proper handling and storage procedures to prevent ESD damage.
Use a controlled soldering iron temperature (below 260°C), and follow the recommended soldering profile. Avoid excessive mechanical stress and use a suitable solder with a low melting point.